Process and apparatus for manufacturing paper



Feb. 26, 1924.

J. H. DURKIN ET AL PROCESS AND APPARATUS FOR MANUFACTURING PAPER FiledMarch 5 ATTORNEYS Feta. .26, 124.

admit;

" Hml'RY' BURKIN AND 1755711) WILKIE, F BATTLE CREEK, HIGHIGA'Z Q.

EROCEQS END AJPPARATUS FOR MANUFACTURING PAPER.

Application filed March 3, i922. fierlal No. 540,942.

li recesses and Apparatus for Manufactur- Paper, of which the followingis a full, clear, and exact description.

iflur invention relates to improvements in t-hegprocess and apparatusfor manufacturingg paper, and it consists in the steps hereis ster set:torth and in the means for carryiilg the process.

Eh the manufacture of paper and similar prdducts, such as box board, itis often desir ole tomalre the paper sheet of a width wh ch is less thenthe maximum width of which thepaper making machine is capable. Thuorders are often received for sheets le'ss width than the maximum, andit is either necessary to cut off a strip from a sheet of maximum width,or to adjust the machine for forming a sheet of the desired width whichis less than the maximum. It the latter course is pursued, it isnecessary to stop the machinery. A deckle is then applied tothe cylindermold. This consists of one or more strips of cotton tape which iswrapped around the cylinder mold near one end thereof. The decklc willnot pick up the paper stock from the vat, and consequently the width ofthe sheet is narrowed by the width of the deckle.

Ens object of our. invention is to pro vide a pro ess by means of whichthe width 0- the sheet of paper may be gauged and the necessity ofstopping the machinery.

A further object of our invention is to provide a process for regulatingthe width of the paper sheet without the necessity of attaching anythingto the cylinder mold, such as the ordinary declrle.

A further object of our invention is to provide a novel mean forcarrying out the steps of the process, these means being siminconstruction, and being readily applicahle to paper or box boardmachines of existing types.

A further object of our invention is to provide a process and meanswhereby a material saving in paper stock, as well as in labor, iseffected.

5 determined in the forming thereoi without- Other objects andadvantages will appear in the fo lowing specification, and the novelfeatures of the invention will be particularly pointed out in theappended claims.

Our invention is illustrated in the accompanying drawings, forming partof this ap plication, in which-- Figure 1 is a sectional view through apulp tank with our invention applied thereto,

Figure 2 is'an enlarged section through a water ipe and the watercontrolling device,

Figure 3 is a section along the line 3-3 of Figure 2,

Figure 4: is a section alongthe line H of Figure 2, and s Figure 5 is adiagrammatic View, showing the relation of the cylinder mold to thewater pipe.

in the drawings, we have illustrated only those parts of the papermaking machine which are directly concerned with the invention. At 1 wehave shown a tank orpulp vat containing the paper pulp mixture 2. Thecylinder mold 3 is mounted for revolution in the vat, and is providedwith the usual wire gauze covering 4: which takes up the pulp in therevolution of the cylinder mold preparatory to the forming of the sheet.

At 5 we have shown a portion of supporting' members which are to hefound on the typical machine. In these supporting memhers we mount pipes6 whichextend parallel with the cylinder mold and are dis posed abovethe axis of the cylinder mold and to one side thereof, as shown inFigure 5. In the drawing, we have shown a plurality of these pipes, butit is obvious that one might be used alone without departing from thespirit of the invention. The pipe 6 passes through the support 5 andcommunicates at its outer end with the interior of a valve casing 7provided with a valve 8 which controls a supply of water from anysuitable source (not shown). A T 9, which establishes communicationbetween the end of the pipe 6 and the valve casing 7, is provided with apacking gland 10, through which a rod 11 passes. This rod 11 is provided with a scraper 12 which is arranged to engage the interior of thepipe 6. It is also provided at its end with a perforated head 12*. Ascrew cap 12" is secured to the end of the pipe. The pipe 6 is providedwith a series of inclined openings 13 for the discharge of water fromthe ipe.

Slidably disposed on the pipe is a s eeve 14 provided with a milledportion 15. The sleeve, while slidable, nevertheless fits tight enoughto cover the openings 13 when it is desired to prevent the escape ofwater from any of the openings.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. When it is desired to makea strip of paper the full width of the cylinder mold, the valve 8 isclosed to prevent the entrance of water into the pipe 6, or the sleeve14 may be moved manually to cover the openings 13. If, however, it isdesired to make a sheet-Of paper of less than the maximum width, thenthe sleeve 14 is moved to uncover a series of openings 13 of the pipe soas to permit the projection of streams of water through the openingswhen the valve 8 is opened to permit the entrance of water, and thus towash oil from the cylinder mold a strip of paper plulp or stock whichhas been taken up by t e cylinder mold, thus returning the stock to thevatand limiting the width of the sheet accordingly. In Figure 1, we haveshown two pipes 6, each sending streams of water 16 outwardly so as towash off the portion of the stock taken up by the cylinder mold.

Obviously, if the valve 8 is shut so as to prevent the admission ofwater, the edges of the sheet will not be washed off and hence the sheetwould-be of the maximum width. The sleeve 14 is easily shifted duringthe running of the machine and can he set at any predetermined positionor adjusted position to regulate the width of the sheet.

By manipulating the rod 11 through the medium of the handle 17, theinterior of the pipe 6 may be cleaned of any obstruction that might tendto clog up the openings 13. Thus the scraper 12 may be passed over thatportion of the pipe bearing the openings 13, or the rod may be movedlongitudinally to cause the perforated plate to act as a scraper, thusdislodging any matter which may have collected on the interior of thepipe, and permitting it to pass out with the stream of water. In orderto permit the plate 12 to move freely in the pipe 6 when it is filledwith water, it is perforated, as shown.

It may he sometimes necessary to adjust the angle of the discharge ofthe stream of water with respect to a tangent to the cyl' indcr mold atthe point of contact of the stream with the cylinder mold. Thus inFigure 5. we have shown the stream 16 as striking the cylinder mold at apoint X. It may be desirable to have the stream strike the mold at apoint lower down or higher up than that shown. The best position is thatposition in which the pulp is washed away from the main body portion ofthe sheet,-

and in which there is no splashing on the portion left which might tendto injure or to wash out parts of the main body portion. In other Words,there is an angle at which the stream may be directed which will causethe efiective washing oil of the pulp-so as to leave a substantiallyclean-cut edge for the sheet. In order to vary the angle at which thestream 16 is projected, we provide means, such as the milled hand grip18 on the pipe, for turning the latter to the proper position. It willbe noted that the pipe is held in the support 5 and that the T isscrewed u against this support. It will be understoo however, that thisangular adjustment is a very slight one and that by grasping the pipeand turning it, the angular inclination of the stream may be changed asdesired.

This process obviates the necessity of running the stock again throughthe mill. as must be done where a strip is cut off from the full widthof the sheet. It also obviates the necessity of stopping the papermaking machine, as for instance, when the ordinary tape deckle is used.This stopping of the machine results in a loss of time and labor. Thedevice is veryreadily installed on ma-v chines of existing types and iscomparatively simple in operation, and hence does not get out of order.We claim:

1. A device of the type described comprising a pipe having a pluralityof open-- ings therein, a rod rotatably disposed in said pipe and havinga lateral projection adapted to engage with the inner surface of saidpipe, and a perforated disc carried by the inner end of said rod, theperiphery of said disc snugly engaging the inner wall of said pipe.

2. In a process of paper manufacture, the

step of determining the width of the paper sheet which consists indirecting a stream of water upon a cylinder mold for washing from thecylinder mold a portion of the paper pulp taken up by the cylinder mold,the stream of water being projected outwardly at an angle to the mainbody of the sheet carried by the cylmder.

3. The combination with a pulp retaining tank and a cylinder moldcarried by said tank, of means for directing a stream of water upon saidcylinder, said means directing the water outwardly at an angle to themain sheet of paper formed upon the cylinder.

4. The combination with a cylinder, of a water pipe disposed parallelwith respect to the cylinder. said. pipe having outlet openingsextending at an angle, said openings being adapted cylinder outwardly atan angle to the main body of the cylinder.

5. The combination with a cylinder, of a water pipe disposed parallelwith respect to to dircct'the water upon said the cylinder, said pipehaving outlet openings extending at an angle, said openm being adaptedto direct the water 11 on smd cylinder outwardly at an angleto t a main0d of tha cylinder, and sleeves carried. y said gaipe and being adaptedin close part i all m: the water outlet apenings in said T). Thecombination with a cylinder, of a water pipe disposed parallel withrespeci tr: the, cylinder, said pigas having mt-lei; open i extending atan angle, said 0 min s b l g adapted to direct the water mp sal dcylinder outwardl at an angle to the main bocy of the cylin er, andsleeves sai pipe and being adapted is close pawl, 91' all of the wateroutletapanings in said gigs, said pipe lzeing adapted $0 turn 931 itsMagi tudinal axis.

' JAMES HENRY DAVID wmmzz.

carried by $1

